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  • Sarah Alice GagglSarah Alice Gaggl
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Incorporating Stage Semantics in the SCC-recursive Schema for Argumentation Semantics

Wolfgang DvořákWolfgang Dvořák,  Sarah Alice GagglSarah Alice Gaggl

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Wolfgang Dvořák, Sarah Alice Gaggl
Incorporating Stage Semantics in the SCC-recursive Schema for Argumentation Semantics
Proceedings of the 14th International Workshop on Non-Monotonic Reasoning (NMR 2012), June 2012

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• KurzfassungAbstract
  Recently, the stage and cf2 semantics for abstract argu- mentation attracted specific attention. By distancing from the notion of defense, they are capable to select arguments out of odd-length cycles. Furthermore, the maximality criterion of naive sets ensures reasonable solutions. The SCC- recursive schema, where the cf2 semantics is defined in, guarantees that some specific evaluation criteria, like directionality, weak- and CF-reinstatement, are fulfilled. Beside several desirable properties, both stage and cf2 semantics still have some drawbacks. The stage semantics does not satisfy the above mentioned evaluation criteria, whereas cf2 seman- tics produces some questionable results on frameworks with cycles of length ≥ 6. That’s why we suggest to combine stage semantics with the SCC-recursive schema of cf2 semantics. The resulting stage2 semantics overcomes the problems regarding cf2 semantics and still fulfills the mentioned evaluation criteria. Furthermore, we analyze redundant patterns for stage2 semantics, and we provide a complexity analysis of the associated reasoning problems.
• Forschungsgruppe:Research Group: Computational LogicComputational Logic

@inproceedings{DG2012,
  author    = {Wolfgang Dvo{\v{r}}{\'{a}}k and Sarah Alice Gaggl},
  title     = {Incorporating Stage Semantics in the {SCC-recursive} Schema for
               Argumentation Semantics},
  booktitle = {Proceedings of the 14th International Workshop on Non-Monotonic
               Reasoning (NMR 2012)},
  year      = {2012},
  month     = {June}
}